Automatic skip loader



April 30, 1 929.

c. M. YOUNG, JR 1,710,794

AU'ToMATI SKIP LOADER Filed July 10, 1926 Eye/2Z0) Patented Apr. 30, 1929.

UNITED STATES PATENT OFFICE.

CHARLES M. YOUNG, JR, OF PHILADELPHIA, PENNSYLVANIA, ASSIGITOR 'llO LINK- BELT COMPANY, OF CHICAGO. ILLINOIS, A CORPORATION OF EELLINOIS.

AUTOMATIC sm LOADER.

Application filed July 10,

My invention relates to improven'ients in automatic skip loaders and has for one object to provide a new and improved means whereby the chute which discharges into the skip at the lower end, of its travel may be forced back out of the path of the skip it by any chance itdrops down into a position where it mightintert'ere with the passage of the skip to the loading position. This is accomplished by so shaping the face of the chute that it acts as a cam it engaged by the lower edge of the skip or by mounting on the chute acam extension which projects slightly above or beyond the end of. the chute and further i away from the normal path of the skip so that even though the displacements of the chute may be considerable, still part of the cam surface will extend out beyond the line of the travel of the skip and permit the skip as it comes down to cam or wedge the chute back far enough to permit the skip to pass through. Other objects will appear from time to time throughout the specification and claims.

My invention is illustrated more or less diagrammatically in the accompanying drawing wherein is shown a side elevation in part section of the lower end of a skip loading sys tem showing the skip, chute and be per.

Like parts are indicated by like 0 aracters tl iroughout.

A is a bin into which coal or other suitable material is fed. A is a bin extension or chute extending down from the bin along an inclined path toward the path of the skip. A is a chute extension mounted for rotation about the axis A on the chute A and associated with the supporting lever A with counterweight A and carrying gate A to shut off the chute when the chute extension is raised into inoperative or dotted line position. A are baffles in the open top of the chute extension A to prevent outflow of the coal beyond the open to of the chute. A are contact strips on t 1e chute extension adapted to be engaged by the skip to operate the chute extension.

B is the pit into which the skip travels for loading. B B B are tracks extending upwardly from the pit. In this case the tracks are inclined in the pit. Traveling on these tracks are rollers B B and B carrying a skip B having an open top into which the chute extension A is adapted to discharge. when in the position shown in full lines.

1526. Serial No. mum.

C is a control arm on the skip having a roller C adapted to engage the contact strips A and to pull the chute extension down from the dotted line to the full line position. C 15 a contact cam on the skip adapted to engage the underside of the contact strips A to throw the chute extension into the dotted line inoperative position on theup travel of the skip thereby closing off the chute by means of the gate A. C is the open discharge end of the chute extension. C is the end of the chute taking the form of a wall to deflect material which comes through the chute extenslon down into the skip or bucket. The downward extremity of the chuteextension when in the open position from the point X tothe point Y forms a cam when in the upper po sition inclined to the line of pat-h of the skip, the inclination being such that it the chute extension should happen to drop down into the path of the skip before the skip comes down the edge of the bucket or skip would strike this cam surface and force the chute extension back to permit the skip to pass through.

C" a separate cam member mounted on the plate C in extension of the cam surface X-Y. It is tangent to it at the point Y but curves away so that even though the chute extension may swing down far enough so as to bring the cam surface XY clear inside the lines of travel of the skip, still the cam will be engaged by the skip and permit wedging of the chute extension out of the line of travel of the skip.

I claim:

1.. The combination with a skip mounted for reciprocation in a generally vertical direction and a chute pivoted at one side of the path of the skip adapted to discharge into the open top of the skip and to be rotated out of line with the travel of the skip, of means mounted on the chute for permitting the skip to wedge the chute out of its path in the event that the chute drops into the path of the skip. said means comprising a cam wall on the chute adapted to be engaged by the bottom of the skip. I

2. The combination with a skip mounted for reciprocation in a generally vertical direction and a chute pivoted at one side of the path of the ski adapted to discharge into the open top 0 the skip and to be rotated out of line with the travel of the skip, of means mounted on the chute for permitting the skip to wedge the chute out of its path in the event that the chute drops into the path of the skip, said means comprising a cam Wall on the chute adapted to be engaged by the bottom of the skip, and. a cam projecting upwardly from the end of the chute.

3. The combination With a skip mounted for reciprocation in a generally vertical di-- rection and a chute pivoted at one side of the path of the skip adapted to discharge into the open top of ti skip and to be rotated out of line with the travel of the skip, of means mounted on the chute for permitting the skip to wedge the chute out of its path in the event that the chute drops into the path of the skip, said means comprisinga cam wall on the chute adapted to be engaged by the bottom of the skip, and a cam l'n'ojecting upwardly from the end of the chute the cam being rearwardly sloped away from the line of the cam surface on the chute.

4. The combination with a skip mounted for reciprocation in a generally vertical direction and. a chute pivoted at one side of the path of the skip adapted to discharge into the open top of the skip and to be rotated out oi. line with the travel of the skip, of means mounted on the chute for permitting the skip to wedge the chute out of its path in the even t that the chute drops into the path of the skip. said means comprising a cam mounted on the chute and adapted to be engaged by the skip.

5. The combination with a skip mounted for reciprocation in a generally vertical direction and a chute pivoted at one side of the path of the skip adapted to discharge into the open top of the skip and to be rotated out of line with the travel of the skip, of means mounted on the chute for permitting the skip to wedge the chute out of its path in the event that the chute drops into the path of the skip said means comprising a cam mounted on the chute an d adapted to be engaged by the skip, the cam being rearwardly sloped awa; from the extreme end of the chute.

(3. In a skip hoist, the C(Hlll'llllai'lOIl of a skip, a pivoted chute, means associated with the ship for rotating the chute into position above the skip to discharge thereinto at the end of the downward movement of the skip, means for rotating the chute away from the discharge position out of line with the skip on the upward movement of the skip and a cam on the chute adapted to be engaged by the skip to torce the chute back out of linewith the skip to permit passage of the skip when the chute has dropped down into the path of iheskip before the skip comes down.

tiigned at Philadelphia, county of Philadphia. and State of Pennsylvania, this first a) of July. 1926.

CHAS. M. YOUNG, .Te. 

